Hydrocarbon-burner.



JAMES W. MARRIOTT, F MANAYUNK, PENNSYLVANIA.

HYDROCARBON-BURNER.

Specification of Letters latent.

Patented May 23, 1916.

Application filed. August 20, 1913. Serial No. 785,685.

To all whom it may concern:

Be itknown that I, JAMES W. MARRIOTT, a citizen of the United States, residing at Manayunk, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Hydrocarbon-Burner, of which the following is a specification.

My invention relates to the class of hydrocarbon burners employing oil, coal-tar and similar fluids as fuel, and mo e particularly relates to burners'used in connection with boiler furnaces, heating furnaces, and similar apparatus.

One object of the invention is to provide a burner of improved construction having novel means whereby the fuel used is gasified and is 'mixed with air or other oxygen bearing element and burned.

Another object of this invention is to provide a burner having novel means whereby the mixing of the oilor other hydro-carbon and the air is regulated and controlled.

A still further object of my invention is to provide a burner having novel means for supplying heated air for use in the mixture of air and hydro-carbon oil used in the burner andfor regulating the temperature of the heated air used in connection with my improved burner.

Referring to the drawings forming part of this specification, Figure 1 is a longitudinal section, showing the construction of my improved burner in detail.

Fig. 2 is a transverse section of the burner, on the line II-II of Fig. 1. Fig. 3 is a sectional side elevation showing one manner of applying my improved burner for use on a furnace.

In the accompanying drawings, the numeral 2 designates the casing of my improved burner which, as shown, is telescoped over the hollow burner barrel 3. The nose or discharge end of the casing 2 is provided with internal screw threads which engage with the external threads provided on the end of the barrel 3 in securing and holding the ca'sin in position on the barrel of the burner. he rear end 2 of the casing is enlarged in diameter and surrounds the enlarged rear end 3 of the barrel 3 and a screw threaded nut 4 engages with the screw threads 5 on the barrel 3 to hold the casing tightly in position on the barrel 3. Asbestos or other suitable packing material 6 is employed between the opposing faces of the casing 2, barrel 3 and nut 4 to provide a tight joint between such parts andprevent leakage of the oil or other liquid fuel from the annular fuel chamber 7-formed between the casing 2 and barrel 3 by the [walls thereof. 5

In the barrel 3, adjacent to the discharge end of the burner, is a series of small radial openings 8 by which communication is afforded between the fuel chamber 7 and the interior 9 of the hollow barrel 3 and through which openings the oil or other liquid fuel is discharged into the interior 9 of the barrel. An opening in the wall ofthe casing 2 is closed by means of a plug 10 to afford means for inspecting and, if necessary, cleaning the openings 8 in the barrel 3 and an opening 11 in the rear end of the fuel chamber 7 is connected by means of a tube 12 with the fluid fuel supply, the fuel being delivered into the tube 11 either by gravity or under pressure as found necessary or desirable. The valve 13 on the tube 12 provides means for regulating the supply of fuel to the fuel chamber.

Adjacent to the rear end of the enlarged portion 3 of "the barrel is a side outlet opening 14 through which heated air is introduced into the interior 8 of the barrel 3 when the burner is in operation and also extending through an opening 15 in the rear end 3 of the barrel is a small tube forming a nozzle 16 through which compressed air is delivered into the barrel to induce a flow of heated air through the opening 14 when the burner is in operation. The rear end of the nozzle 16 is screw threaded into a nipple 17 which in turn is screw threaded in the opening in the rear of the barrel 3 and an elbow 18 inserted in the end of the nipple- 17 provides suitable means for connecting the nozzle 16 with an air compressor or other source of air under pressure (not shown), the supply of compressed air being controlled by the valve 19 on the supply pipe 20 which connects into the elbow 18.

As will be seen by reference to Fig. 3 the discharge end of the burner projects into an opening 21 through the wall of the furnace so as to discharge the burning or burned gases into the furnace chaml'icr 225. The opening ll in the .rear end of the burner is connected by means of a tube 24 with a T and Connected into one end of the T .25 is a pipe 5-20 which projects through an opening 27 into the furnace chan'iliier J 3. ralre 28 on thepipe i-Zti yurovides means for regulating the supply of heated gas drawn from the liurnace through the pipe 26 into the pipe 24: and, through. the inlet opening 14, into the interior of the burner barrel 3. The heated gases drawn from the furnace 1hrough-the pipe. 26 may be air or heated roducts of combustion. The other side of the T 25 is provided with a valve 29 which o pensinto the atmosphere to provide means for admitting a supply of air, at atmospheric pressure and temperature, into the pipe 24 and in this way regulate and control the temperature of the hot air passing through the pipe 24 into the burner.

In the operation of lily-improved burner the parts are assembled as shown in'Fig. 3. The'valves 13 and 19 controlling respectively the supply of oil and compressed air to the burner are then adjusted to admit air into the nozzle 16 andoil into the fuel chamber 7. The oil in the chamber 7 enters through the openings 8 in the walls of the barrel 3- into the interior 9 of this barrel and is met by the incoming stream of compressed air passing through the barrel 3 and supplied by the nozzle 16. The mixture of air and'oil or other hydro-carbon fuel is then discharged through the opening 21 into the furnace and, being ignited, is burned therein. The stream of compressed air pass ing at "ahigh velocity from the nozzle 16 into the interior 8 of the barrel 3 induces a flow of air through the pipes 24 and 26 and the opening 14 into the chamber 9 and as one end of the pipe 26 opens into the furnace chamber, heated air will be drawnfrom the chamber 23 into the chamber 9 of the barrel 3. The passage of the heated air through the barrel 3 will heat the walls thereof and the liquid fuel contained in the fuel chamber 9 will become highly heated to such a temperature that the fuel becomes gasified .upon emerging from the openings 8 into the chamber 9. By a suitable adjustment of the valves 27 and 28 a supply of cold air is admitted into the T 25 which will regulate the temperature of the hot air delivered through the pipe 26 into the barrel 3 and in this way a more efiicient operation of the burneris obtained.

The advantages of my invention will be apparentto those skilled in the art. apparatus is simple and is easily kept in repair. Modifications in the construction The and arrangement of the parts may be made without departing from my invention.

ll claim:

L'lhe. combination-with a furnace, ofa hydrm'arbon burner arranged to discharge into said furnace, said burner having a hollow burner barrel with an enlarged rear end forming a liuid chamber, a casing forming an annular fluid chamber surrounding said burner barrel, means connecting said annular chamber and the burner barrel to deliver fluid fuel to said burner barrel, a nozzle connecting the first fluid chamber with a source of compressed air, a conduit connecting the latter chamber with the interior of the furnace. means controlling the supply of compressed air to said first chamber whereby a flow of heated fluid is induced through said conduit, and means for controlling the volume of heated fluid delivered into said first chamber.

2. The combination with a furnace, of a hydrocarbon burner arranged to discharge into said furnace, said burner having a hollow burner barrel with an enlarged rear end forming a fluid chamber, a casing forming an annular fluid chamber surrounding said burner barrel, means connecting said annular chamber and'the burner barrel to deliver fluid fuel to saidburner barrel, a nozzle connecting the first fluid chamber with a source of compressed air, a conduit connecting the latter chamber with the interior of the furnace, means controlling the supply of compressed air to said first chamber whereby a flow of heated fluid is induced through said conduit, means for controlling the volume of heated fluid delivered into said first chamber, and means for controlling the temperature of the heated fluid entering the burner.

A hydrocarbon burner having an axially horizontal burner barrel, a casing surrounding the barrel and forming an annular fuel chamber therewith, said barrel having at least one transverse opening in the side wall thereof to connect the-interior of the barrel with that of be casing, said casing having a screw threaded connection to one end of thebarrel and the other end thereof in sliding engagement with the barrel and a lock nut screw threaded on the barrel and adapted to engage with the sliding end of said casing.

a. A hydrocarbon burner having a burner barrel, a casing surrounding the barrel and forming an annular fuel chamber therewith, said barrel having a plurality of transverse openings in the side wall thereof to connect the interior of the barrel with the interior of the casing, said casing having one end in screw threaded engagement with the barrel with the other end thereofin sliding engagement on the barrel, a packing groove in the sliding end of said casing, and a lock nut In testimony whereof, I have hereunto set screw threaded on the barrel and adapted my hand. v s to engage with the sliding end of the casing JAMES W. MARRIOTT.

to hold the packing in said groove and pre- Witnesses: 5 vent leakage at the joint between the barrel PERCE C. INGRAHAM,

and sliding end of said casing. EDGAR SHOFFNER. 

